Crown-block.



R. E. KLINE.

CROWN BLOCK.

APPLIOATIOH FILED JAN. 10, 1913` Patented Aug. 18, 1914.

f ff f feg.

RICHARD E. KLINECF LOS ANGELES, CALIFORNIA.-

CROWN-BLOCK.

Specification 0f Letters Yatent. 1

Patented Aug. 18, 1914.

Application filed January 10, 1915. Serial No. 741,160.

1'0 all lwhom it may concern Be it known that I, RICHARD E. Kunz,A acitizen of the United States, residing at Los Angeles, in the county ofLos Angeles. State of California, have invented new and usefulImprovements in Crown-Blocks, of which the following is aspecification.

This invention relates to crown blocks for oil Well drilling rigs andthe like; :md the invention has for its prime' immediate object theprovision of a simple and efficient crown block, amply strong towithstand all of the severe strains to which crown blocks are subjected,and durable as to wearing sun faces.

There are several features of my improved crown block which I mayespecially mention as fellows; first, the'eompllete and substantialrigidity of the whole structure; second, the substantial bearingconstruction for the different sheaves so as td reduce friction andWear; third, dust prpofe construction and automatic oiling devices for Yall of the hearings; and fourth, adjusta- 25 bility ofthe differentsheaves in their posh tions relative to one another and on the bleekframing. r

Incorporating as itdoes the above men: tioned feat/ures',v my block atonce fulfils'the mostrigid requirements of devices of this character Itis particularly useful that the boxes or bearings be constructed dustproof and with automatic Oilers; thus obviating constant care of thebearings, which are more or less diilicult of access at the top of thedrilling derrick. l Other features of this invention vwill be* come morereadily apparent from the following speciication, taken .in connectionwith the accompany-ing drawings in which I have shown various views of apreferred form of my crown block, as follows:

Figure 1 is a side elevation of an approved forni of my crown block.Fig. 2 is a plan view of the same. Fig',l 3 is an enlarged section takenon line 3 3 of Fig. 2. Fig. 4 is a section taken on line 4-4 of Fig. 3.

The frame of my improved crown block is made essentially of a' number oflongi`' tudinal -beam members 10 and 11, members y 10 being preferablyshorter thanI the meinbers 11 for the reason that the members 211 ared'esigned to' support between themthev sand 'limi' sheave 12 Wh'dseouter edge hangs over the outer edge otthe derrick'crown. The framemembers 10 are spaced apart by suitable plates 13, 14 and 157thesejplates or of the entire structure. It is seen in Figs.

1 and`2 that the bolts 16 preferably extend through the completestructure: and that the plates 13 are all in alinement with euch other:while at the outer end of the block. the plate 15 and bolt 18 aresituated at the ends of the longer members 11 and the plates 14 andbblts 17 are situated some distance inside the ends of the shorter menebers 10. Thisgarrangement is madeparticuhirly to accommodate lthe sandline sheave 12.

I provide four or more sheaves 20. rouxmouly known as casing` sheaves.these being the sheaves over which the cable is rcaved for heavypullingr on casing. The sheaves 20 are arranged symmetrically about thecenter of the block; so that, when the block is placedon the crownof aderricl, the sheaves will be arranged symmetrically with relation to thehole beneath. (The hole may or muy not be in the center of the derrick;and the sheaves will be placed on the derrick crown in conformance withthe position of the hole f with respect to lthe dcrrick.) Each of thecasing sheaves 20 isl mounted in a pair of bearings 21 adjustably placedupon the longitudinal I-beam members 10 and 11. Each of these bearings21 has base bolts 22 which pass through ,suitable apertures 23B theframe members 10 and 1l: and there are provided extra holes 23 so thatthcbean ings may be moved along the Ifbearn ,ment bers to properlyadjust the position oaf the sheave. This adjustment provides foradaptation of the sheaves to any position of ythe hole `with respect tothe derrick, allowing the block to be properly centrally located uponthe derrick crown.

I The sand line sheave 12 Ais mounted in suitable bearings 25jwhich areadjustable on the longitudinal `beams 1'1 in vthe same manner as beforedescribed. The main line, or drilling line, sheave 30 is mounted inbearingsfl;A and it will be noted that a pair of the bearings 21 and thebearings 31ers constructed together; so that the sheaves 30 may beplaced in about the position shown relative to thesheaves 20 carried bythese bearings 21. When the sheaves are adjusted longitudinally ofthejbeams they maintain their proper relative relation to each other. Allof the hearings Q1 of all of the sheaves 20 are duplicates of each otherwit-h the exception of these hearings 21 which are formed together withthe bearings 31. The internal constructitn` and arrangements of thedierent hearings are all the same; and I have .shown details ot thehearingsQl and 3l, these details illustrating not; only the l internalconstruction vof all the bearings but .showing also the peculiarconnect-ive construction ot' these two bearings.

The sheaves 2U have hollow trunnions 35, the interior bores of thetrunnions being tapcred with their small diameters at the cen-4 ter ofthe trunnion. This construction at once gives the greatest possiblestrength with the least possible weight. and also provides the greateststrength at the point where it is the most needed. Sheaves 20 are .mademore heavily and with Aheavier trttnnions and bearings than anjvv of theother sheaves on the crown block. The main line sheave is provided witha smaller solid .u trunnion $36 which is supported in the bear ings 31.The lower halves of these bearings are carried in the base block 37which has oil reservoirs 38 to carry a -sutlicientamount ot lubricatingoil to supply the bearings for :50 a longr time. The lower halves of thebearings* are provided \rith, suitable bearingy sleeves of antifrictionmetal 39, constructed in halves so as to allow the passage of oil rings40 to carry the oil to keep the trun- :55 nions and bearings constantlyllubricated. Theupper halves of the bearings are notprovided with anyhearing sleeves, the trunnions 35 and 3G resting inthe bearing sleeves39 and all the strain being downwardly. -10 And this constructionfacilitates the distrihutign of lubricant over the upper side of thetrunnion. so that the lubricating oil is thoroughly distributed. overthe trunnion where it passes vinto the bearing sleeve 39.

The upper halves of all the hearings are constructed as shown in Figs.and 4.

3 They each consist in a main trunnion covering portion or cap 45secured on the lower bearing half by meansnmc suitable bolts 46.

The upper bearing half or ea p notonl)y cov ers the upper periphery ofthe. trunnion hut also has a at. circular cap which covers the end ofthe bearing-and the end of the trunnion and prevents entry of dust tothe bearling.I This is an important feature, especially inconnectionwith theself-oiling feature of the bearing: and these two features,

' togetherfobviate all necessity ttor constant attention to the crownblock.` The oil rings 40|tpa`ss'ovcr the'trunnions in the ,ordinarymanner; imdzthev upper bea-ringhalf or cap has suitable semi-circulargroove ,47 for itsrfaccginnodation; havingajrv- Oil cup $8 with a coverfit) for the purpose of fil bearing with Oil.

To prevent entry of dust, which mightotherwise settle into the spacebetween the inner edge or end, of the hearing cap and the shoulder 20 onthe wheel trunnion, I have provided a suitable dust, strip 50 which isattached to the bearingr cap and overlaps the enlarged portion of thetrunnion or of the sheave. (I have shown the dust strip in Fig. 4 and asapplied to one bearing in Fig. 2; this for clarity of illustration inthe drawings.)

With the construction above described I am enabled to 'fulfil everyrequirement imposed upon acrown block in well drilling service. There isample provision forv adjustment ofA the various sheaves to ooi-rectposition on vthederricl crown; and there is ample provision for allline-s likely to be required. Should more casing lines he required thanis provided for by the sheaves 20, I may extend my block hvfhtplication. merel?,1 duplicating one or more ot the longitndinalmembers and the sheaves Q0. I have provided for dust proofconstruction and -for continuous and etlicient oilinkgr of the differenthearings. These provisions are of a very practical nature; in anordinary crown block as notv used it is necessary that frequent.attendance he had.

Having described my in vention, I claim:A

v A crown bloclf.y comprising in combination. four horizontal parallelspacedbeams, two casing line sheaves in cach of the spaces adjacent theoutermost. beams arranged one near each end of said beams, bearingblocks for said sheaves on the heains on cach side of the said Spaces.said heal-itin' hlochs being adjustable longitudinally on thc beams. asand line sheave at. one end ot the space hetween the two inner heatns.l tiring blocks for said sheave on the two inner beams. said bearingblocks being independent of the first mentioned bearing blocks, adrilling' line sheave between the two inner hearns near their otherends"aud near the casing vline sheaves at that end. and bearingr blocksfor the. drillingr line shcave on the two inner heams. said blocksconnected with the adiaceot bearing hleths for the casing line sheaves?.so that when the L-aitl adjacent vcasincr line sheaves auid drilling:line sheave are `adjusted longitudinalh7 of the beams they maintainlived relation to each other.

ln witness that l claim the foretoin?! l have hereunto subscribe-fl mynaine this 18th dav of October IQlQ.

RICHARD n. KLINE.

ling the Witnesses z' Emvooo H. Banus-mm: JAMES T. BARKELEW.

